Draft-rigging for railway-cars.



G. A. JQHNSON.

vDRAFT Rlame FOR RAILWAY c'AHs. APPLICATION FILED MAY241913.v RENEWEDAPR. 5,1915. 1919,?5, Patented May18, 1915. 2 SHEETS-SHEET l.

WITNESSES G. A. JOHNSON. DRAFT RIGGINGFOR RAILWAY cARs.

APPLICATION FILED MAY 24| |913'- R'ENEWED APR-5| I9I5. 19139875,Pat'ented May 18, 1915.

WITNESSES QW ga UNITED vS'1 "A'i`ES PATENT FFCE. v GEORGE A. JOHItTSON,OF CHICVAG, ILLIllTOIS, AISgFNOR 110 "WILLIAM MIN-ER, OF CHICAGO,ILLiINOIS. l

DRAFT-mesme ron RAILWAY-CARS.

Specification of Letters Patent.

Patented May 18, 1915.

Application filed May 24, 1913, Serial No. 769,57'4. Renewed April 5,1915. Serial No. 19,347.

To all w'hoiiz it may concern.'

'Be it known that 1,-Gnonon A. Jo'HNsoN, a citizen of the United States,residing at Chicago, in'the'county of Cook and State of Illinois, haveinvented a certain new and useful improvement in Draft-Rigging for iRailway-Cars, of which the' following is a full., olea-r, concise, andexact description,

-, reference being had to the accompanying tion.

drawings, forming a part of this specifica- Myinvention relates toimprovements in draft rigging for railway cars.

r1`he object of -my invention is to provide a draft rigging-in which thecompression resisting membeis are of high capacity in vbiiiiingmovement, and of an easier action in pulling movement.

In the drawings forming a part of this specification Figure 1 is asideelevation partly in vertical longitudinal section on line 1-1 ofFig. 2 of a draft rigging embodying my invention. Fig. 2 is a plan viewpartly in horizontal section on line @[2 of Fig. 1. Fig. 3 is a. planview partly in horizontal section illustrating the position of the partsWhen under full compression in pulling movement of the draft rigging.Fig. 4 1s a plan view partly in horizontal'section illustrating theposition of the parts when under full compression in buifing movement ofthe draft rigging.

Referring to the drawings 5, 5 represent draft sills or parts of the carframe to which,

the draft 'rigging' is applied, A the'end sill, .7 the buer block, 8 thedraw bar carry iron, 9 the tie plate, 10, 10 the front stop membershaving the stop shoulders 11, 11, 12 the rear stop member, 13 the drawbar, 14 the draft gear, 15 the draft yoke. The draft yoke is forwardlyprovided With a hollow member 16 having an opening 17 to receive thedraw bar, the said member 16 being provided with the lateral slots 18 toreceive the coupler key 19 which passes through the draw bar, and alsoin preferable construction through slots 20, 2O in the front stopmembers and adjacent portions nal opening 2l extending through the rearmember 22, which connects the limbs 23, 23 of'the draft yoke. The draftgear 14.- ,comprises a shell Q1 closed at its forward end by thepreferably integral plate Q5, said plate having the lateralextensionsQG, 26 at either side of the shell, which extensions are adapted toengage against the front stop shoul ders 11, 11 in normal position andon f0rtheir forward end against thefriction' shell and at 4their rearend against the friction mechanism. The friction mechanism coinprisesthe friction shoes'l, the wedge 32, and in preferable construction'theantifriction rolls The friction shoes 31 are preferably three in number,each having zin-outer.

friction face 31 adapted to engage the in ternal friction face 35 of theshell, and each having an inner .Wedgingface 36 preferably provided withan antifriction roll seat 37 to receive one of the antifriction `rollers33. 'lhe wedge 32 is a block like member provided with a plurality Iofwedging faces 38, there being one for ear-h1 friction shoe. One of theantifriction rolls 33 is seated between each wedging face of the wedgeand the adjacent inner wedging face of the friction shoe. rl`lie wedge39. has a rearward projeo tion 3) which passes through the opening 21inthe member 29. of the draft yoke 15, and engages at its rear face 40irinormal position of the gear, as illustrated in FigA l of thedrawings, and in buiing movement thereof, as illustrated in Figfl: ofthe drawings,` the rear stop member 12. The said rwedge is provided witha rearwardly opening recess 41 to receive the head 4.2 of a connectingrod 43, which `passes through a longitudinal perforation vlll insaid'wedge and extends forwardly through the shell and tl'ieforward endthereof, whereiit. is provided with a nut 45 which is received within arecess 46 in the outer forward end of said shell. The rear 'stop member12 is preferabl a one-pieced structure secured between the draftmembers, and is provided with the in- Wardly extendedilimiting stopshoulders k17,

47 at either side thereof. The rear end of the shell is adapted toengage against said limiting stop shoulders on rearward moveof. In frontof lthe stop shoulder 48 the stop 'member 12 is provided with a space 51within which the rear end of the draft yoke 15 is adapted to be receivedon rearward movement of the shell.

The rear ends of the friction shoes 31 engage against the inner face 52of the rear connecting member 22 of the draft yoke. 0n forward movementof the draw bar the draft yoke is drawn forwardly by means of thecoupler key 19,I and the friction shoes 31 are drawn within the shell bythe forward movement of the draft yoke, the said shell being inengagement at its forward end against the front stop member, and

. through said forward movement of the friction shoes the springmechanism 27 is compressed between the forward end of the shell and thesaid friction shoes. Onvsuch I movement it will be apparent that thewedge n slides' within the slots 18 in the shell moves rearwardly 32does not spread the friction shoes or operate against the same. n

.An easyA start may begaven cars to which :this draft rigging is applied.by reason of the fact that in pulling movement ofthe draw bar thecompression resisting members of the draft gear operation are thesprings. Gn release movement the sudden .recoil of the spring isprevented by reason of the .fact that .its rearward movement is'somewhat retarded by the drag of the friction shoesagainst the shell.On rearward movement of the draw bar the coupler key member 16 of thedraft yoke, and the draw bar forces the shell rearwardly, the wedge isstopped against tho rear stop member, and as the the wedge spreads thefriction shoes into rictional engagement with'the shell, the springsmeanwhile are compressed until the rearward travel of the shell islimited as it comes into engagement .with thelimiting stop shoulders 47of the rearstop member 12. In rearward or bult"- ing movementof the drawbar both -thc friction and spring members within the shell are 'incompression resisting action.

I claim 1. In a draft rigging for railway cars, in combination, a drawbar, a draft yoke, front andrear stop members, a shell, springs,frictiomshoes and-wedge within the shell, the

niagara yoke with a draft gear, the draft gear comprising a shell havinga rearward o ening, friction shoes, springs and wedge wit in the shell,the springs being seated between the shell and friction shoes, the wedgeengaging the rear stop member, said wedge being adapted to spread thefriction shoes only on rearward movement of the shell.

3. In a draft rigging for railway cars, in combination, a draft yoke,stop members, a rearwardly opening shell, springs and friction shoeswithin the shell, a wedge interposed between the friction shoes and rearstop member, the forward movement of the yoke compressing the springswithout spreading the friction shoes, and the rearward movement of theshell compressing the springs and forcing the friction shoes intospreading engagement with the wedge.

4. In a draftrigging for railway cars, in combination, a draw bar, draftyoke, stop members, a rearwardly opening shell, springs, friction shoeswithin thevshell, a wedge interposed between trie friction shoes andrear stop members, the draft yoke being in engagement with the frictionshoes and provided with an opening for the passage of the wedge.

5. In a draft rigging for railway cars, in combination, stop members, adraw bar, shell and means for connecting the same, of springmechanismvand friction mechanism within the shell, the frictionmechanism including awedge adapted to directly engage the rear stopmember, and to Spreadthe friction mechanism only on rearward movement ofthe draw har.

6. In a draft riggingfor railway cars, a draft gear comprising a. shell,springs, friction shoes and a wedge within the shell, in combinationwith al draw bar, draftyoke and stop members, the'wedge being seatedagainst the rearystop member on rearward movement of the 'draw bar, andin such movement adapted to spread the friction shoes, the yoke being inengagement with the friction shoes on forward movement of the draw bar.

' 7. In a draft rigging for railway ears, in combination, a draw bar, adraft yoke connected thereto, front and rear stop members, a. shell,friction shoes, springs and wedge within the shell, the draft yoke beingin engagement with the friction shoes, and adapted to compressA thesprings between said shoes and the shell on forward movement of the drawbar, the said yoke having an open.- ing for the passage of thewedeeifiiefiiiedge 9. In a draft rigging for railway cars,

combination, a draft bar, stop members., a shell having a rearwardopening, springs,

' friction slices and wedge within the shell,

means connecting the draw bar and friction shoes adapted to compress thesprings on forward movement of the draw bar without wedging engagementbetween the friction slices and the wedge.

10. In a draft rigging for railway cars, in combination, a draw bar,stop' members, a

4shell, springs, friction shoes and wedge within the shell, a yokeconnecting tlie draw bail and friction slices, trie wedge being seatedindependently of said yoke and adapted to spread the friction shoes onlyon rearward movement of the shell.

11. In a draft rigging for railway cars, in combination, front and rearstop members, a draw bar, draft yoke, friction shell, springs, frictionshoes and wedge within the shell,

lthe draftyoke engaging the friction shoes,

the wedge passing through said yoke and being in spreading engagement.with the friction shoes only on rearward movement of the shell, therear stop member being provided with shoulders to engage the shell inits rearward movement, and. limitv the compression of the parts withinthe shell.

12. In a draft rigging for railway cars, the combination of stop membersand a draft yoke With a draft gear, the draft gear coinprising a shellhaving a rearward opening, springs, friction shoes and wedge withintheKshell, the draft yoke directly engaging the friction shoes and thewedge directly engaging the rear stop member, the wedge being adapted tospread the friction shoes only on rearward movement of the shell.

, GEORGE A. JOHNSON..

Witnesses: Y

ELiiaNoR L. NASH,

JOHN A. MARTiNnUs.

